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Single Range Data-Based Clutter Suppression Method for Multichannel SAR
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DOI：10.1109/LGRS.2021.3072411.png)
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Abstract
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Although space-time adaptive processing (STAP) is recognized as the optimal clutter suppression way for synthetic aperture radar (SAR) in theory, the deficient of independent and identically distributed range samples in real scenario limits its application. The reduce-dimension STAP methods can decrease the demand for range samples, but the assumption of moving target-free is always unsatisfied. The direct data domain methods only use the data of the range cell under test (RCUT) to avoid the assumption, but they are conducive to interference suppression than clutter suppression and have huge computational burden. Thus, in this letter, a single range data-based STAP method is proposed not only exploring the space-time statistical properties of clutter to suppress it, but also operating solely on the RCUT without recourse to range samples. Theoretical analyses and simulation results verify the effectiveness of the proposed method.
Keywords:
Clutter
Synthetic aperture radar
Simulation
Eigenvalues and eigenfunctions
Couplings
Azimuth
Matrix converters
Clutter suppression
single range data
space-time adaptive processing (STAP)
synthetic aperture radar (SAR)
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